Our cheapest offers for flights from London to Sydney

Here you can compare cheap flights from London (LON) to Sydney (SYD) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Sydney. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
Best option London Sydney	Outbound 01/03/25 1 Stopover (PEK) CA0856, CA0173 34h 50min	Return 18/03/25 1 Stopover (PEK) CA0174, CA0937 32h 10min	Air China		£632
London Sydney	Outbound 01/03/25 2 Stopovers (PKX, CAN) CZ0674, CZ3178, CZ0301 35h 50min	Return 18/03/25 2 Stopovers (CAN, PKX) CZ0302, CZ3099, CZ0673 30h 55min	China Southern Airlines		£655
London Sydney	Outbound 01/03/25 1 Stopover (PVG) MU0214, MU0735 33h 35min	Return 18/03/25 1 Stopover (PVG) MU0562, MU0201 29h 30min	China Eastern Airlines	?	£660
London Sydney	Outbound 01/03/25 1 Stopover (PVG) MU0214, MU0735 33h 35min	Return 18/03/25 1 Stopover (PVG) MU0562, MU0201 29h 30min	China Eastern Airlines		£667
London Sydney	Outbound 01/03/25 2 Stopovers (PVG, WUH) MU0202, MU2524, MU0749 37h 30min	Return 18/03/25 1 Stopover (PVG) MU0736, MU0201 44h 00min	China Eastern Airlines		£667
London Sydney	Outbound 01/03/25 1 Stopover (PVG) MU0214, MU0735 33h 35min	Return 18/03/25 1 Stopover (PVG) MU0562, MU0201 29h 30min	China Eastern Airlines	?	£673
London Sydney	Outbound 01/03/25 1 Stopover (PEK) CA0856, CA0173 34h 50min	Return 18/03/25 1 Stopover (PEK) CA0174, CA0855 30h 15min	Air China	?	£675
London Sydney	Outbound 01/03/25 1 Stopover (PVG) MU0214, MU0735 33h 35min	Return 18/03/25 1 Stopover (PVG) MU0736, MU0201 44h 00min	China Eastern Airlines	?	£703
London Sydney	Outbound 01/03/25 1 Stopover (CAN) CZ0304, CZ0301 35h 20min	Return 18/03/25 1 Stopover (CAN) CZ0302, CZ0303 31h 15min	China Southern Airlines	?	£709
London Sydney	Outbound 01/03/25 1 Stopover (PVG) MU0214, MU0735 33h 35min	Return 18/03/25 1 Stopover (PVG) MU0562, MU0201 29h 30min	China Eastern Airlines	?	£710

Departure airport

London (LCY, LGW, LHR, LTN, STN, SEN)

London City

London Gatwick

London Heathrow

Destination airport

Australia

Sydney Kingsford Smith

Airline

China Southern Airlines
China Eastern Airlines
Swiss International Air Lines
Vietnam Airlines
Singapore Airlines

Flight type

Return

Outbound departure month

March 2025
April 2025

Outbound weekday

Wednesday
Saturday

Return departure month

March 2025
April 2025

Return weekday

Tuesday
Wednesday

Change in

Delhi Indira Gandhi
Dubai
Frankfurt-Main
Dublin
Istanbul
Hong Kong Chek Lap Kok
Ho Chi Minh City (Saigon)

Tips and tricks to help you find cheap flights from London to Sydney

Useful information about the flight from London to Sydney

Flights from London to Sydney

The flight route from London (LON) to Sydney (SYD) in Australia is extremely popular in the UK. At a distance of 10,600 miles, the flight time will always take at least 22 hours. Aircraft will almost always land at least once en route to refuel, the actual duration of the journey can therefore vary. This is one of the longest haul routes and airlines operating on this route include Quantas, British Airways, Virgin Atlantic, Cathay and Emirates. There are various routes to choose from, with stopovers either in the Middle East, Asia or even to the west, in the United States. A direct flight from London to Sydney is operated by Qantas and British Airways, taking between 22 and 23 hours.

Cheap flight from London to Sydney

Prices of air tickets fluctuate according to the season and a low cost flight can be purchased for as little as £800 return. Longer flights with two stopovers are the cheapest, but could take as long as 40 hours. Last minute deals are usually not that much more expensive but will be harder to find.

Sydney Airport

The departure airports in London are Gatwick and Heathrow. There is only one destination airport in Sydney, Sydney Kingsford Smith Airport, which is the busiest airport in Australia. The airport is located about 10 miles south of central Sydney. Transport links to and from Sydney airport are provided by buses and trains. Those with late arrival times also have the option of staying at one of the Sydney airport hotels. As the international gateway to Australia, Sydney airport also has connections to many further airports in Australia.

Important flight information

Flight information: London - Sydney

Outbound and return from	£631.28
Flight duration	min. 20:30 / max. 21:00
Return flight duration	min. 22:00/ max. 22:25
Distance	17020 km
Flights per week	16
Departure airport	Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport	Airport Sydney Kingsford Smith (SYD)
Destination country	Flights to Australia

Alternative routes to Australia

Alternative flights to Sydney

Flight Manchester - Sydney from £1,023
Flight London Heathrow - Sydney from £632
Flight London Gatwick - Sydney from £660
Flight London City - Sydney from £1,085
Flight Edinburgh - Sydney from £1,031
Flight Glasgow - Sydney from £795

Flight destinations with a similar price

Flight London - Mauritius from £635
Flight London - Colombo from £610
Flight London - Cancun from £571
Flight London - Islamabad from £580
Flight London - Dhaka from £619
Flight London - Johannesburg from £588
Flight London - Zanzibar from £648
Flight London - Lima from £675
Flight London - Belize City from £653
Flight London - St. Lucia Hewanorra from £594